You’ve made it to the end! Let’s review what we have learned so far:

  • Printing output in a Java program can be done using the following three commands: System.out.print(), System.out.println(), and System.out.printf()
  • The Scanner class is built into Java and is useful for reading input from different sources including user input, and text files.
  • FileWriter is used to output data from a program into a file on your computer, and FileReader is used to read from a file. They both are specifically tailored to reading and writing character/text data to files.
  • IOExceptions are exceptions related to input or output that a program may encounter. They can be handled by a programmer using try-catch blocks.
  • Java programs must initially be compiled into Java byte code before they can be run using a terminal or command prompt. When running a Java program, a user can pass in multiple arguments through the command line.

Take this course for free

Mini Info Outline Icon
By signing up for Codecademy, you agree to Codecademy's Terms of Service & Privacy Policy.

Or sign up using:

Already have an account?